07/26/2009 – New release with many bug fixes and a few new features.
See the download page for details

04/21/2009 – This source tarball now includes the files necessary to
build new rubygem packages. Also fixed a couple of minor bugs since
20090415.

Current Status

While DRuby is an ongoing research project, it already works quite
well for small, self-contained Ruby scripts. Currently, it is
unable to analyze much of the Ruby standard library “out-of-the-box”.
Analyzing such library code is something we’re working toward and have
already had some initial success, finding several real programming
errors with its analysis.

The DRuby type analysis is built on top of a more general framework
for analyzing Ruby programs (which we call RIL — the Ruby
Intermediate Language). In future releases, we plan to distribute
this framework separately in the hope that other researchers can use
RIL to explore their own ideas for Ruby. Until then, a motivated
OCaml hacker should already be able to get started with the current
tarball, but feel free to email our mailing list if you need help.